JPS62173579A - Recognizing device for handwritten character - Google Patents

Abstract

PURPOSE:To secure recognition of handwritten characters even though they are set in the normal or upside-down directions, by delivering again information data stored in a memory to a recognizing means upside down if these characters are not set in the normal direction or plural character candidates are available. CONSTITUTION:Character data handwritten on a tablet 1 undergo input processing through an input process means and then a pre-process means. These processed character data are stored in a memory and recognized by a recognizing means. In case the characters are not set in the normal direction or plural character candidates are available, the character data stored in the memory are delivered again to the recognizing means after undergoing upside-down inverse arithmetic operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a handwritten character recognition device that can recognize handwritten input even when the tablet is held upside down.

[Conventional technology]

Figure 5 is a configuration diagram of a conventional Bartz computer (hereinafter referred to as a personal computer) with a "handwritten character recognition function". In the figure, (1) is a tablet for inputting characters by hand), is a cable, (4) is a cable (
2) connects the tablet (1) to the computer itself.

Next, the operation will be explained with reference to the input character recognition flowchart by the personal computer body (4) shown in FIG. The data input by hand on the tablet (1) is converted into vertical and horizontal coordinate data by the input processing means (step 6-1), and the preprocessing means [for character recognition of the converted vertical and horizontal coordinate data] (Step 6)
-2) The recognition means recognizes the candidate characters from the information data passed from the preprocessing means (Step 6-3), and the candidate character output means outputs the recognized candidate characters to the CRT (Step 6-4).

[Problem that the invention seeks to solve]

Since the conventional handwritten character recognition device is configured as described above, there is a problem in that when handwritten input is performed with the tablet upside down, a candidate character different from the input character is output.

This invention was made to solve the above-mentioned problems, and it provides a handwritten character recognition device that can recognize input characters and output the corresponding characters even if the tablet is upside down and input by hand. The purpose is to obtain.

[Means for solving problems]

The handwritten character recognition device according to the present invention recognizes the characters corresponding to the input characters even when handwritten input is performed with the tablet upside down, in a character recognition flowchart that recognizes handwritten input characters and outputs the corresponding character code. It has processing means that can do this.

[Effect]

The handwritten character recognition device of this invention stores the information data obtained by the preprocessing means of the character recognition flowchart in the memory, and when the orientation is not normal or multiple candidates are selected, the stored information data is By inverting the image upside down and passing it to the recognition means again, it is recognized whether it is in a normal orientation or upside down.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. In Fig. 1, in which the same parts as in Fig. 5 are given the same reference numerals,
(1) is a tablet, (2) is a cable, (3) is an I/F slot cartridge, (4) is a personal computer as a host CPU, (5) is a tablet) (1)
) Attached to the side of the screen is a lock switch for selecting character types such as alphanumeric characters, symbols, katakana characters, hiragana characters, etc. (6) is a pad sheet for inputting characters by hand.

Next, the operation will be explained. FIG. 2 is a recognition flowchart when characters are handwritten input using the tablet (1) in the handwritten character recognition device of FIG.
The character data handwritten into the tablet (L) is input-processed by the input processing means (step 2-1), and is processed by the pre-processing means into information data in the normal orientation as shown in FIG. 3 (step 2-1). 2-2), save the information data in the positive direction information data storage means (step 2-
3).

Next, the saved characters are recognized by the recognition means (step 2-4), and a recognition error check is performed by the recognition error checking means (step 2-5).

As a result of the check, if there are no recognized characters or if there are multiple recognized characters, convert the saved information data into upside-down information data as shown in Figure 4 using the forward → reverse information data conversion means.Step 2 -6) The converted character is recognized again by the recognition means (step 2-7), and the recognition error check is performed again by the recognition error checking means (step 2-8).

As a result of the check, if there are no recognized characters or if there are more than one recognized character, it is regarded as an input error or a recognition error, and an error is reported by the error code output means, and the process is terminated (step 2-9).

If only one recognized character is found in the recognition error check, it is assumed that the input has been correct, and the corresponding character code is output by the recognized character code output means, and the process is terminated (step 2-10).

〔Effect of the invention〕

As described above, according to the present invention, since the information data conversion means for converting the information data in the normal orientation of the preprocessing means into the information data in the upside down orientation is provided, the tablet can be turned upside down even in the normal orientation. It has the effect of allowing you to input characters by hand even from any direction.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a personal computer equipped with a handwritten character recognition device according to an embodiment of the present invention, FIG. 2 is a recognition flowchart according to an embodiment of the present invention, and FIG. 3 is a diagram of the preprocessing information data in the normal orientation. An explanatory diagram, Figure g4, is an explanatory diagram of information data converted upside down, FIG. 5 is a configuration diagram of a conventional personal computer with a handwritten character recognition function, and FIG. 6 is a recognition flowchart by the personal computer. In the figure, (L) is a tablet, and (4) is a personal computer. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Agent Patent Attorney Masuo Oiwa (and 2 others) Figure 2 Figure 3 Figure 4 (Xmax-Xo, Ymay-Yo) Figure 5 Figure 6

Claims (1)

[Claims] an input processing means for processing data handwritten on a tablet; a preprocessing means for processing the data into information data in a normal orientation; and an information data storage means for storing the information data in an information data buffer in a positive orientation. a first recognition error checking means for recognizing the information data and performing an error check; and an information data converting means for converting positive information data into negative information data in the case of a recognition error; a second recognition error check means that recognizes the information data converted by the information data conversion means and performs an error check; and an error hood that outputs an error code when a recognition error occurs by the second recognition error check means. A handwritten character recognition device comprising an output means and a recognized character code output means for outputting a recognized character code when the first and second recognition error checking means do not recognize an error.